Radio System Integration and Compliance Engineer

At Sonos we want to create the ultimate listening experience for our customers and know that it starts by listening to each other. As part of the Sonos team, you’ll collaborate with people of all styles, skill sets, and backgrounds to realize our vision while fostering a community where everyone feels included and empowered to do the best work of their lives. JOB TITLE:    Radio System Integration and Compliance Engineer (Job Code: CY0226) JOB DETAILS:    Radio Frequency (RF) Testing & Performance Verification: Execute and analyze RF performance characterization tests for new and existing products (e.g., receiver sensitivity, transmitter power, EVM, linearity). Perform system bring-up, initial debugging, and optimization of radio designs. Assist in troubleshooting and resolving complex RF issues, including desensitization, spurious emissions, and basic EMI, using RF test equipment (Spectrum analyzer, VNA , Load Pull and callbox). Characterize key RF components (e.g., RFICs, FEMs) to ensure performance meets specifications. Develop and define new test procedures or Product Functional Specification (PFS) items to characterize the RF system performance. Test Automation & Tool Development: Develop, implement, and maintain automation scripts and tools using Python to streamline RF testing and data analysis. Contribute to the development and maintenance of test automation frameworks and support continuous integration/delivery (CI/CD) pipelines. Contribute to improving test efficiency, reducing test time, and optimizing test processes. Regulatory Compliance Support: Lead and support in-house radio pre-compliance testing efforts and manage 3rd party radio certification processes for global markets (FCC, ETSI, SRRC, MIC, etc.). Design and build test automation suites to streamline radio compliance testing conducted at 3rd party labs. Maintain an in-depth understanding of evolving radio compliance standards in various regions and global markets, proactively identifying and contributing to strategies for regulatory adherence. RF Simulation & Analysis Support: Support RF simulation efforts using tools like ADS or QUCS to analyze RF system performance. Conduct electromagnetic (EM) simulation of PCB layout-related issues using full-wave simulation solvers such as CST or HFSS. Contribute to evaluating system-level performance metrics, including basic coexistence scenarios. Support link budget analysis and basic interference studies. Manufacturing & JDM Partner Support: Provide technical support and automation for radio production activities at Contract Manufacturing (CM) and Joint Development Manufacturing (JDM) partners. Assist in on-site and remote debugging of radio-related issues during line bring-up and mass production. Contribute to the analysis of factory production line data to identify trends and assist in troubleshooting. Support the definition and optimization of manufacturing processes for radio products. Lab & Test Environment Management: Configure and troubleshoot network infrastructure within lab and test environments. Manage and maintain test setups and lab spaces, including test benches and OTA chambers. Prepare and maintain tools and equipment for compliance testing and travel. Cross-Functional Collaboration: Collaborate effectively with Hardware, Software, Manufacturing, Compliance, and other engineering teams to debug and optimize overall system performance in highly integrated environments. EDUCATION AND EXPERIENCE REQUIREMENTS:     Master’s degree (or foreign equivalent) in Electrical Engineering, Computer Engineering, Radio Frequency Engineering, or related field plus 2 years of experience in the offered position or related position. SPECIAL REQUIREMENTS: Must possess expertise/knowledge sufficient to adequately perform the duties of the job being offered. Expertise/knowledge may be gained through employment experience or education. Such expertise/knowledge cannot be "quantified" by "time". Required expertise/knowledge includes: Experience in Radio Frequency testing, integration, or product development, for Wi-Fi and Bluetooth-enabled devices in the consumer electronics industry. Experience with architecting, developing, and deploying robust Radio Frequency automation test frameworks in Python using libraries (Pandas and NumPy), including designing scalable, maintainable, and reusable code modules to interface with various Radio Frequency test equipment and Devices Under Test (DUTs) as well as analyzing large datasets from radio performance tests and applying statistical methods for anomaly and outlier detection. Data visualization skills (Matplotlib, Seaborn and Plotly) for communicating radio performance test results to stakeholders. Experience with Git/GitHub for version control, including using branching strategies, pull requests, code reviews, and resolving merge conflicts in collaborative development environments. Experience with GitHub Actions for automating Continuous Integration/Continuous Delivery pipelines supporting automated build, deployment, and validation workflows in branch and pull request stages to enable stable, reliable, and continuously updatable test solutions. Experience with 3rd party Radio Frequency test automation frameworks (IQFact, QDART and CMWrun) to capture comprehensive transmit and receive performance metrics, including EVM, ACLR, sensitivity, throughput, and coexistence. Experience with automated execution of continuous integration and delivery pipelines triggered by GitHub events, including build, deployment, and validation checks in branch and pull request workflows. Understanding of Radio Frequency fundamentals, including common wireless protocols (Wi-Fi and Bluetooth) for creating and validating test setups, debugging performance issues, troubleshooting connectivity issues and understanding the relationship between performance metrics and improving reliability of wireless communication systems. Experience with Radio Frequency test and measurement equipment, including spectrum analyzers, network analyzers, signal generators, and callboxes (CMW500) for wireless system bring-up, validation, and debugging. Experience with Linux environments, including navigating file structures, Secure Shell/remote device control, network tools (ping and netstat), utilizing built-in utilities (grep, vi and find), deploying Docker containers and debugging kernel logs and building kernel modules. Experience with global Wi-Fi and BT/BLE regulatory standards (FCC, CE, ETSI, MIC and SRRC) applied in Radio Frequency validation and performance analysis, including evaluating Tx/Rx performance, analyzing Radio Frequency metrics, and identifying compliance risks. Experience with applying Radio Frequency/Electromagnetic simulation tools (ADS, CST and QUCS) in Radio Frequency design validation and debugging, including modeling Radio Frequency circuits and structures, analyzing performance, identifying layout-related issues, and correlating simulation results with measurements to support root cause analysis and design optimization. Experience in Supporting manufacturing and debugging efforts at Contract Manufacturing (CM)/Joint Design Manufacturing (JDM) facilities, including ensuring robust and repeatable Radio Frequency test setups, deploying automated test platforms, analyzing test data, and troubleshooting Radio Frequency/system issues during builds to enable early detection of design and performance issues, improve production efficiency and yield, and ensure stable mass production. OTHER:  Salary: $159,453 per year. JOB LOCATION:       Sonos, Inc. 301 Coromar Dr. Goleta, CA 93117 If offered employment, must have legal right to work in U.S.  **Must reference JOB CODE#: CY0226 when applying.   #LI-DNI Your profile will be reviewed and you'll hear from us once we have an update. At Sonos we take the time to hire right and appreciate your patience. At Sonos we consider a wide range of factors when determining compensation, which may lead  individual compensation to vary depending on job related qualifications, skills, and experience.  All full time employees are eligible for merit increases, discretionary bonuses, and equity.  Our job postings may span more than one career level and the base pay range may be modified in the future based on changing market conditions. Please note that compensation details listed in US job postings reflect the base salary only, and do not include bonus, equity, or benefits. We also offer a comprehensive benefits program with choice and flexibility in mind to help support the health, wealth, and overall well-being of our employees. Regular full time employees in the US are eligible for benefits on day one, including: Medical, Dental, and Vision Insurance A 401(k) plan with company matching and immediate vesting An Open Time Off policy (OTO) so you have maximum opportunity to disconnect and recharge, with no tenure-based vacation accruals required 80 hours of sick time upon hire, refreshed annually Up to 12 paid holidays per calendar year Sonos offers a generous paid leave program for new parents or to care for a family member with a serious health condition, as well as short- and long-term disability for your own medical condition. Company-paid Disability, Life, and AD&D Insurance Voluntary benefits, including Voluntary Life, AD&D, Accident, and Pet Insurance Mental health benefits to support your holistic well-being A generous employee discount program & Sonos Radio HD - on us! Note: No amount of pay is considered to be wages or compensation until such amount is earned, vested, and determinable. The amount and availability of any bonus, benefits, or any other form of compensation and benefits that are allocable to a particular employee remains in the Company's sole discretion unless and until paid and may be modified at the Company’s sole discretion, consistent with the law. Notice to U.S. Job Applicants: Sonos is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, and other legally protected characteristics. Sonos is committed to working with and providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation because of a disability for any part of the employment process, please send an e-mail to accommodations@sonos.com and let us know the nature of your request and your contact information.